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ASTM D4452-06
Standard Practice for X-Ray Radiography of Soil Samples- 발행일 : 2006-11-01
- 발행기관 : ASTM
상세정보
| 분야 | 04.08 : 토양, 석재 (Ⅰ) |
|---|---|
| 적용범위 | 1.1 This practice covers the determination of the quality of soil samples in thin wall tubes or of extruded cores by X-ray radiography. 1.2 This practice enables the user to determine the effects of sampling and natural variations within samples as identified by the extent of the relative penetration of X-rays through soil samples. 1.3 This practice can be used to X-ray cores (or observe their features on a fluoroscope) in thin wall tubes or liners ranging from approximately 2 to 6 in. (51 to 152 mm) in diameter. X-rays of samples in the larger diameter tubes provide a radiograph of major features of soils and disturbances, such as large scale bending of edges of varved clays, shear planes, the presence of large concretions, silt and sand seams thicker than 1/4 in. (6.4 mm), large lumps of organic matter, and voids or other types of intrusions. X-rays of the smaller diameter cores provide higher resolution of soil features and disturbances, such as small concretions (1/8 in. (3.2 mm) diameter or larger), solution channels, slight bending of edges of varved clays, thin silt or sand seams, narrow solution channels, plant root structures, and organic matter. The X-raying of samples in thin wall tubes or liners requires minimal preparation 1.4 Greater detail and resolution of various features of the soil can be obtained by X-raying of extruded cores, as compared to samples in metal tubes. The method used for X-raying cores is the same as that for tubes and liners, except that extruded cores have to be handled with extreme care and have to be placed in sample holders (similar to Fig. 2) before X-raying. This practice should be used only when natural moisture or other undisturbed soil characteristics are irrelevant to the end use of the sample. 1.4.1 Often it is necessary to obtain greater resolution of features to determine the propriety of sampling methods, the representative nature of soil samples, or anomalies in soils. This practice requires that either duplicate samples be obtained or already tested specimens be X-rayed. 1.5 This practice can only be used to their fullest extent after considerable experience is obtained through many detailed comparisons between the X-ray film and the sample X-rayed. 1.6 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are provided for information purposes only. 1.7 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a projects many unique aspects. The word "Standard" in the title of this document means only that the document has been approved through the ASTM consensus process. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
| 국제분류(ICS)코드 | |
| 페이지수 | 14 |
| Edition | 06 |
이력정보
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | ASTM D4452-14 REDLINE상세보기 | Standard Practice for X-Ray Radiography of Soil Samples | 2014-07-01 | 구판 |
| 2 | ASTM D4452-14상세보기 | Standard Practice for X-Ray Radiography of Soil Samples | 2014-07-01 | 구판 |
| 3 | ASTM D4452-06상세보기 | Standard Practice for X-Ray Radiography of Soil Samples | 2006-11-01 | 구판 |
| 4 | ASTM D4452-85상세보기 | Standard Methods for X-Ray Radiography of Soil Samples | 1995-01-01 | 구판 |
| 5 | ASTM D4452-85(1995)e1상세보기 | Standard Methods for X-Ray Radiography of Soil Samples | 1995-01-01 | 구판 |
| 6 | ASTM D4452-85(2002)e1상세보기 | Standard Test Methods for X-Ray Radiography of Soil Samples | 1985-01-25 | 구판 |
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